From: Paul Eggert <eggert@cs.ucla.edu>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
Xiaoming Ni <nixiaoming@huawei.com>,
libc-alpha@sourceware.org, glibc-bugs@sourceware.org,
unassigned@sourceware.org, drepper.fsp@gmail.com, roland@gnu.org,
carlos@redhat.com
Cc: wangle6@huawei.com, yukeji@huawei.com
Subject: Re: [PATCH v2] stdlib: realpath use malloc replace __alloca to reduce stack overflow risks [BZ #26341]
Date: Fri, 7 Aug 2020 17:00:04 -0700 [thread overview]
Message-ID: <3a2abb0e-59da-b3da-afa5-3b39168ad954@cs.ucla.edu> (raw)
In-Reply-To: <ad170aab-3c41-af17-7320-7f68bf464462@linaro.org>
On 8/7/20 12:43 PM, Adhemerval Zanella wrote:
> Paul, it might be something to be fixed on gnulib since I noted that both
> gpl and lgpl code uses malloca (which calls alloca if the header is present).
The Gnulib canonicalize.c is a quite-different implementation, and does not use
alloca.
There is quite a bit of Gnulib code that does use alloca, but it is supposed to
do so without allocating and using more than 4032 bytes at a time, which is safe
on all the Gnulib targets we know about.
next prev parent reply other threads:[~2020-08-08 0:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 10:16 Xiaoming Ni
2020-08-07 19:43 ` Adhemerval Zanella
2020-08-08 0:00 ` Paul Eggert [this message]
2020-08-08 9:14 ` Xiaoming Ni
2020-08-07 23:56 ` Paul Eggert
2020-08-08 8:54 ` Xiaoming Ni
2020-08-09 8:44 ` Paul Eggert
2020-08-09 12:38 ` Florian Weimer
2020-08-09 17:22 ` Paul Eggert
2020-08-10 13:40 ` Adhemerval Zanella
2020-08-11 9:54 ` Paul Eggert
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